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Finite Volume Method Numerical Modelling of the Penstock Flows in Dam Intake Sector Subjected to Varying Operating Conditions with Particle Image Velocimetry Validation

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dc.citedby1
dc.contributor.authorZahari N.M.en_US
dc.contributor.authorZawawi M.H.en_US
dc.contributor.authorNg F.C.en_US
dc.contributor.authorAbas M.A.en_US
dc.contributor.authorNurhikmah F.en_US
dc.contributor.authorAziz N.A.en_US
dc.contributor.authorTung L.H.en_US
dc.contributor.authorIsmail I.N.en_US
dc.contributor.authorSidek L.M.en_US
dc.contributor.authorRadzi M.R.M.en_US
dc.contributor.authorid54891672300en_US
dc.contributor.authorid39162217600en_US
dc.contributor.authorid57192101900en_US
dc.contributor.authorid56893346700en_US
dc.contributor.authorid57204810651en_US
dc.contributor.authorid57201665672en_US
dc.contributor.authorid57210387852en_US
dc.contributor.authorid55598767200en_US
dc.contributor.authorid35070506500en_US
dc.contributor.authorid57204677038en_US
dc.date.accessioned2023-05-29T09:05:45Z
dc.date.available2023-05-29T09:05:45Z
dc.date.issued2021
dc.description.abstractThe formation of vortex and swirling in any flow structures of the hydropower dam is undesirable, as it reduced the performance of turbine as well as lowered the efficiency of hydroelectric power generation. Furthermore, it could lead to the hydraulic losses at the entrance of power intakes, the blockage at the trash racks due to entrain debris and the reduction of the working life of turbines. This paper studied penstocks flows in the dam intake section numerically. The dynamics of penstocks flows at different operating conditions were analyzed to determine the vortex formation. To access the veracity of the current proposed numerical model, a validating study based on the particle image velocimetry (PIV) experiment was conducted. It was found the discrepancy between both numerical and experimental flow velocities is 12%, implying the numerical model is well-validated and the corresponding findings are acceptable. It was found that the vortex was formed in the penstock that located at the lowest level relative to other penstocks. Furthermore, the highest pressure of 4 MPa was recorded at the bottom section of the penstock which observed vortex. This numerical work provided useful insights for the future dam reliability analysis, particularly involving penstocks and intake section. � 2021. All Rights Reserved.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.37934/arfmts.86.1.176186
dc.identifier.epage186
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85119531160
dc.identifier.spage176
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85119531160&doi=10.37934%2farfmts.86.1.176186&partnerID=40&md5=fa7fbfbd4a40f71bb66d1ae11f2dbccc
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25955
dc.identifier.volume86
dc.publisherPenerbit Akademia Baruen_US
dc.relation.ispartofAll Open Access, Hybrid Gold
dc.sourceScopus
dc.sourcetitleJournal of Advanced Research in Fluid Mechanics and Thermal Sciences
dc.titleFinite Volume Method Numerical Modelling of the Penstock Flows in Dam Intake Sector Subjected to Varying Operating Conditions with Particle Image Velocimetry Validationen_US
dc.typeArticleen_US
dspace.entity.typePublication
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